Weather in Alton, Illinois, United States

7-Day Detailed Weather Forecast for Alton

This Afternoon

Temperature: 57°F

Wind Speed: 8 mph

Wind Direction: W

Forecast: Isolated rain showers. Partly sunny. High near 57, with temperatures falling to around 43 in the afternoon. West wind around 8 mph. Chance of precipitation is 20%.

Tonight

Temperature: 24°F

Wind Speed: 12 to 22 mph

Wind Direction: W

Forecast: Scattered rain showers before 7pm, then scattered rain and snow showers between 7pm and 1am. Mostly cloudy, with a low around 24. West wind 12 to 22 mph, with gusts as high as 38 mph. Chance of precipitation is 30%.

Friday

Temperature: 38°F

Wind Speed: 8 to 17 mph

Wind Direction: W

Forecast: Sunny, with a high near 38. West wind 8 to 17 mph, with gusts as high as 30 mph.

Friday Night

Temperature: 31°F

Wind Speed: 8 to 12 mph

Wind Direction: SE

Forecast: Partly cloudy. Low around 31, with temperatures rising to around 35 overnight. Southeast wind 8 to 12 mph.

Saturday

Temperature: 55°F

Wind Speed: 12 mph

Wind Direction: SW

Forecast: Mostly sunny. High near 55, with temperatures falling to around 49 in the afternoon. Southwest wind around 12 mph.

Saturday Night

Temperature: 27°F

Wind Speed: 5 to 9 mph

Wind Direction: NW

Forecast: Partly cloudy, with a low around 27.

Sunday

Temperature: 42°F

Wind Speed: 6 mph

Wind Direction: N

Forecast: Mostly sunny, with a high near 42.

Sunday Night

Temperature: 28°F

Wind Speed: 7 mph

Wind Direction: SE

Forecast: Partly cloudy, with a low around 28.

Monday

Temperature: 47°F

Wind Speed: 7 to 10 mph

Wind Direction: SE

Forecast: Partly sunny, with a high near 47.

Monday Night

Temperature: 40°F

Wind Speed: 6 to 9 mph

Wind Direction: S

Forecast: Mostly cloudy, with a low around 40.

Tuesday

Temperature: 62°F

Wind Speed: 8 mph

Wind Direction: SW

Forecast: Mostly sunny, with a high near 62.

Tuesday Night

Temperature: 48°F

Wind Speed: 6 mph

Wind Direction: SE

Forecast: Mostly cloudy, with a low around 48.

Wednesday

Temperature: 67°F

Wind Speed: 6 to 10 mph

Wind Direction: S

Forecast: Mostly cloudy, with a high near 67.

Wednesday Night

Temperature: 53°F

Wind Speed: 8 mph

Wind Direction: S

Forecast: Mostly cloudy, with a low around 53.